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Celeste and Platform Sport Engineering with Noel Berry

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Celeste and Platform Sport Engineering with Noel Berry


Celeste is a critically acclaimed motion platformer developed by Extraordinarily OK Video games. They just lately launched Celeste 64 which is an open supply mission to commemorate the sixth anniversary of the unique Celeste, and improvement of their subsequent main sport, Earthblade, is underway.

Noel Berry is a programmer at Extraordinarily OK Video games and he joins the present to speak about creating Celeste and Earthblade, gameplay engineering, the state of C# versus C++ for sport improvement, and extra.

Joe Nash is a developer, educator, and award-winning group builder, who has labored at firms together with GitHub, Twilio, Unity, and PayPal. Joe acquired his begin in software program improvement by creating mods and operating servers for Garry’s Mod, and sport improvement stays his favourite solution to expertise and discover new applied sciences and ideas.

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Zeekr VP Burns Cadillac, Highlights “Rise of China” and “Glory of Detroit No Extra”

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Zeekr VP Burns Cadillac, Highlights “Rise of China” and “Glory of Detroit No Extra”


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What has been happening between Zeekr and Cadillac over in China?!

There’s been somewhat little bit of trash speak happening over there in China between Zeekr and Cadillac. This follows some unhappiness amongst Zeekr clients after which Cadillac making an attempt to capitalize on that unhappiness — however not precisely nailing it. Right here’s the sequence of occasions and key components:

  1. Zeekr simply launched the 2025 Zeekr 007 sedan and 2025 Zeekr 001.
  2. These two new fashions are updates and enhancements over their predecessors, however they arrive nearly 6 months after these predecessors arrived available on the market.
  3. Zeekr house owners bought upset that their quite-new autos have been already being hit with huge depreciation attributable to these new variations popping out so quickly.
  4. Cadillac responded to that by posting a new-customer pitch on Weibo that particularly talked about itself as a Zeekr “substitute.” (Apparently, “ZEEKER REPLACEMNET” was Cadillac’s lead textual content within the Weibo publish, not solely misspelling “substitute” but additionally misspelling “Zeekr.”)
  5. That advertising try didn’t go over notably nicely. Zeekr VP Zhu Ling rotated and burned Cadillac. Zhu Ling famous that Cadillac was a traditional model, however that it was time to maneuver on. Extra particularly, he stated (in Chinese language): “The electrical age, the rise of China, the glory of Detroit is not any extra.”
  6. Additionally, seemingly responding to Cadillac and discussing the 007, he added: “It’s sooner than you, it’s smarter than you, it’s youthful than you, and it’s extra reasonably priced than you. Time doesn’t return, historical past doesn’t return. See you in my mirror.”

Them are fightin’ phrases.

Cadillac pulled down its publish quickly after it went viral, however “Cadillac vs Zeekr” grew to become a trending matter on Weibo.

The bottom model of the 007 prices simply RMB 209,900 ($29,400) and has 310 kW of energy. And simply take a look at the factor!

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Swift delegate design sample – The.Swift.Dev.

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Swift delegate design sample – The.Swift.Dev.



· 1 min learn

The delegate design sample is a comparatively straightforward approach to talk between two objects by way of a standard interface, protocol in Swift.

Implementing delegation in Swift

You’ll want a delegate protocol, a delegator who really delegates out the duties and a delegate object that implements the delegate protocol and does the precise work that was requested by the “boss”. Let’s translate this into human.

The consumer studies a bug. The undertaking supervisor creates a problem and tells one of many builders to repair the issue asap.

See? That’s delegation. Sooner or later an occasion occurred, so the delegator (supervisor) utilized an exterior useful resource (a developer) utilizing a standard interface (problem describing the issue for each occasion) to do obtain one thing (repair the 🐛).

To show how delegation works in actual life I made a reasonably easy instance. I’m going to make use of an analogous strategy (as a result of Xcode playgrounds are nonetheless freezing each 1-5 minutes) like I did for the command sample, however the objective of this one goes to be virtually completely completely different, as a result of we’re speaking about delegation. 😅

#!/usr/bin/env swift

import Basis


protocol InputDelegate {

    var shouldContinueListening: Bool { get }

    func didStartListening()
    func didReceive(enter: String)
}


class InputHandler {

    var delegate: InputDelegate?

    func pay attention() {
        self.delegate?.didStartListening()

        repeat {
            guard let enter = readLine() else {
                proceed
            }
            self.delegate?.didReceive(enter: enter)
        }
        whereas self.delegate?.shouldContinueListening ?? false
    }
}


struct InputReceiver: InputDelegate {

    var shouldContinueListening: Bool {
        return true
    }

    func didStartListening() {
        print("👻 Please be good and say "hello", if you wish to depart simply inform me "bye":")
    }

    func didReceive(enter: String) {
        change enter {
        case "hello":
            print("🌎 Whats up world!")
        case "bye":
            print("👋 Bye!")
            exit(0)
        default:
            print("🔍 Command not discovered! Please attempt once more:")
        }
    }
}

let inputHandler = InputHandler()
let inputReceiver = InputReceiver()
inputHandler.delegate = inputReceiver
inputHandler.pay attention()

That is how one can create your personal delegate sample in Swift. You’ll be able to think about that Apple is doing the identical factor below the hood, with UICollectionViewDataSource, UICollectionViewDelegate and many others. You solely need to implement the delegate, they’ll present the protocol and the delegator. 🤔

Weak properties, delegates and courses

Reminiscence administration is a vital factor so it’s price to say that each one the category delegates must be weak properties, otherwise you’ll create a very dangerous retain cycle. 😱

protocol InputDelegate: class { /*...*/ }

class InputHandler {

    weak var delegate: InputDelegate?

    /*...*/
}

class InputReceiver: InputDelegate {
    /*...*/
}

Right here is the altered Swift code snippet, however now utilizing a category because the delegate. You simply have to alter your protocol slightly bit and the property contained in the delegator. All the time use weak delegate variables if you’re going to assign a category as a delegate. ⚠️

As you may see delegation is fairly straightforward, however it may be harmful. It helps decoupling by offering a standard interface that can be utilized by anybody who implements the delegate (generally information supply) protocol. There are actually wonderful articles about delegates, when you’d wish to know extra about this sample, you must test them out.

Associated posts

On this article I’m going to point out you easy methods to implement a primary occasion processing system to your modular Swift software.

Be taught the iterator design sample by utilizing some customized sequences, conforming to the IteratorProtocol from the Swift commonplace library.

Discover ways to use lazy properties in Swift to enhance efficiency, keep away from optionals or simply to make the init course of extra clear.

Newbie’s information about optics in Swift. Discover ways to use lenses and prisms to govern objects utilizing a purposeful strategy.

Samsung Galaxy Ring teardown sheds mild on disposable tech not meant to final over two years

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Samsung Galaxy Ring teardown sheds mild on disposable tech not meant to final over two years


Purchaser beware: Samsung’s new Galaxy Ring and related finger-worn wearables symbolize the most recent class of wearable tech designed to entice shoppers. Earlier than opening up your pockets for a modern new sensible ring, nevertheless, you must know that you simply’re shopping for what’s primarily disposable expertise.

As iFixit highlights in its newest teardown, the Galaxy Ring – like all different sensible rings – is hamstrung by the truth that its lithium battery cannot be changed with out destroying the machine. In essence, Samsung’s well being monitoring ring has a shelf life and as soon as the battery is worn out, your solely plan of action is to toss out your complete factor.

How lengthy do you’ve gotten? Nicely, that relies upon. iFixit notes that the chemistry in trendy consumer-grade lithium-ion batteries are normally good for at the least 400 cycles. For many, this implies the $400 Galaxy Ring will not final greater than about two years with common use. Something past that needs to be thought of icing on the cake.

iFixit does not advocate shopping for disposable tech like this however in case you do, know that you simply’re at the least getting some neat – albeit, not earth-shattering – {hardware}.

The staff lately labored with engineers at Lumafield, and subjected a Galaxy Ring to a computed tomography (CT) scanner to get a have a look at the wearable’s inside workings with out dismantling it.

Curiously sufficient, the scan revealed using a press connector becoming a member of the battery to the circuit board. It is an odd design resolution contemplating the battery just isn’t replaceable. Why not merely solder it to the board? Maybe Samsung went this path to make meeting simpler and sooner.

Decided to dig deeper, iFixit cracked open the Galaxy Ring utilizing warmth and a dental choose to soften and chip away on the resin and plastic coating awaiting on the within. After confirming a press connector is certainly used to hyperlink the battery and inductive coil to the circuit board, they’d a more in-depth have a look at the battery.

It was too far broken to positively ID its capability however in response to Samsung’s web site, a dimension 11 ring ought to have a 19.5 mAh battery (curiously sufficient, battery capability scales with ring dimension).

Apple and Main League Baseball announce August “Friday Evening Baseball” schedule

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Apple and Main League Baseball announce August “Friday Evening Baseball” schedule



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